/*
 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef OPENSSL_COMP_H
#define OPENSSL_COMP_H
#pragma once

#include <openssl/macros.h>
#ifndef OPENSSL_NO_DEPRECATED_3_0
#    define HEADER_COMP_H
#endif

#include <openssl/opensslconf.h>

#ifndef OPENSSL_NO_COMP
#    include <openssl/crypto.h>
#    include <openssl/comperr.h>
#    ifdef __cplusplus
extern "C" {
#    endif

COMP_CTX *COMP_CTX_new(COMP_METHOD *meth);
const COMP_METHOD *COMP_CTX_get_method(const COMP_CTX *ctx);
int COMP_CTX_get_type(const COMP_CTX *comp);
int COMP_get_type(const COMP_METHOD *meth);
const char *COMP_get_name(const COMP_METHOD *meth);
void COMP_CTX_free(COMP_CTX *ctx);

int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen, unsigned char *in, int ilen);
int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen, unsigned char *in, int ilen);

COMP_METHOD *COMP_zlib(void);
COMP_METHOD *COMP_zlib_oneshot(void);
COMP_METHOD *COMP_brotli(void);
COMP_METHOD *COMP_brotli_oneshot(void);
COMP_METHOD *COMP_zstd(void);
COMP_METHOD *COMP_zstd_oneshot(void);

#    ifndef OPENSSL_NO_DEPRECATED_1_1_0
#        define COMP_zlib_cleanup()                                                                \
            while (0)                                                                              \
            continue
#    endif

#    ifdef OPENSSL_BIO_H
const BIO_METHOD *BIO_f_zlib(void);
const BIO_METHOD *BIO_f_brotli(void);
const BIO_METHOD *BIO_f_zstd(void);
#    endif

#    ifdef __cplusplus
}
#    endif
#endif
#endif
